Time-domain astrophysics is a branch of astronomy that focuses on studying the variability of celestial objects over time. This field examines how astronomical objects, such as stars and galaxies, change in brightness, position, or other properties over various timescales. By monitoring these changes, researchers can gain insights into the physical processes and environments that govern the evolution of these objects. Time-domain astrophysics encompasses a wide range of observational techniques, including transient surveys, long-term monitoring programs, and targeted follow-up observations of specific events. It plays a crucial role in advancing our understanding of astrophysical phenomena such as supernovae, gamma-ray bursts, and gravitational wave events.